Não informado. (1973). Forest genetic resources information. Food and Agriculture Organization of the United Nations.
Chicago-Zitierstil (17. Ausg.)Não informado. Forest Genetic Resources Information. Rome: Food and Agriculture Organization of the United Nations, 1973.
MLA-Zitierstil (8. Ausg.)Não informado. Forest Genetic Resources Information. Food and Agriculture Organization of the United Nations, 1973.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.